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#226 2008-01-24 17:33:44
- Jai Ganesh
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Re: Oral puzzles
Well done, NullRoot! Your answer #434 is correct!
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#227 2008-05-15 18:42:16
- Jai Ganesh
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Re: Oral puzzles
#439. I am x years of age today. My mother's age is three times my age in years. After how many years would her age be double of that of mine?
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#228 2008-05-15 21:17:13
- Jai Ganesh
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Re: Oral puzzles
#440. I buy an article for a certain price. I sell the article for $1200, thereby earning a profit percentage equal in magnitude to the cost price. What is the profit I make in the transaction?
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#229 2008-05-17 22:35:34
- Jai Ganesh
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Re: Oral puzzles
#441. If for two Real numbers x and y, the sum (x+y) is greater than the product (xy), certain condition or conditions have to be satisfied. What are the condition or conditions. In the alternative, give the Range of values of x and y such that the sum is greater than the product.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#230 2008-05-18 05:28:06
- JaneFairfax
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Re: Oral puzzles
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#231 2008-05-19 18:31:28
- Jai Ganesh
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Re: Oral puzzles
Solution to #441:
Well done, JaneFairfax!
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#232 2008-05-19 22:48:33
- JaneFairfax
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Re: Oral puzzles
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#233 2008-05-19 23:04:40
- Jai Ganesh
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Re: Oral puzzles
Solution to #440 :- Please check your answer again, JaneFairfax!
#442. Inside a triangular park, there is a flower bed forming
a similar triangle. Around the flower bed runs a uniform path
of such a width that the sides of the park are exactly double the corresponding sides of the flower bed. What is the ratio of area of the path to that of the flower bed?
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#234 2008-05-19 23:26:25
- JaneFairfax
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Re: Oral puzzles
Oops. Sorry.
Last edited by JaneFairfax (2008-05-19 23:55:49)
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#235 2008-05-19 23:31:47
- Jai Ganesh
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Re: Oral puzzles
Solution to #440:
This time right, Well done, JaneFairfax!
#443. A man earns 6% Simple Interest per annum on his deposits in Bank A while he earns 8% simple interest per annum on his deposits in Bank B. If the total interest he earns is $ 1800 in three years on an investment of $ 9000, what is the amount invested at 6%?
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#236 2008-05-19 23:34:22
- Jai Ganesh
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Re: Oral puzzles
JaneFairfax,
Is the solution you have hid as #443 actually that of #442?
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#237 2008-05-19 23:56:36
- JaneFairfax
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Re: Oral puzzles
Yes, I meant #442. Sorry.
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#238 2008-05-20 02:38:45
- Jai Ganesh
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- Registered: 2005-06-28
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Re: Oral puzzles
Well done, JaneFairfax!
#444. Given in the picture below is 5 square boxes made up of matchsticks. Remove any three matchsticks. There should be three squares left with no loosely hanging matchsticks.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#239 2008-05-20 02:41:00
- TheDude
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- Registered: 2007-10-23
- Posts: 361
Re: Oral puzzles
Wrap it in bacon
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#240 2008-05-20 02:45:43
- TheDude
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- Posts: 361
Re: Oral puzzles
Wrap it in bacon
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#241 2008-05-20 02:56:46
- Jai Ganesh
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- Posts: 48,385
Re: Oral puzzles
Answers to #443 and #444:
Well done, TheDude! Keep it up!
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#242 2008-05-20 18:49:13
- Jai Ganesh
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- Registered: 2005-06-28
- Posts: 48,385
Re: Oral puzzles
#445. A farmer has a piece of land of the shape given in the picture below. He intends dividing the piece of land and distributing it equally among his four sons. The sons also desire that each of the four parts be of the same shape as the original land the farmer owned. How would the farmer divide the land?
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#243 2008-05-20 21:23:11
- JohnnyReinB
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- Registered: 2007-10-08
- Posts: 453
Re: Oral puzzles
445:
"There is not a difference between an in-law and an outlaw, except maybe that an outlaw is wanted" 
Nisi Quam Primum, Nequequam
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#244 2008-05-20 21:44:28
- Jai Ganesh
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Re: Oral puzzles
Answer to #445:-
#446. In a tournament each of the participants was to play
one match against each of the other participants. 3 players fell ill after each of them had played three matches and had to leave the tournament. What was the total number of participants at the beginning, if the total number of matches played was 75?
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#245 2008-05-21 11:50:51
- JaneFairfax
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Re: Oral puzzles
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#246 2008-05-21 18:11:43
- Jai Ganesh
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- Registered: 2005-06-28
- Posts: 48,385
Re: Oral puzzles
Answer to #446:-
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#247 2008-05-22 01:48:54
- JaneFairfax
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Re: Oral puzzles
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#248 2008-05-22 02:38:59
- SvenBee
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- Registered: 2008-03-08
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Re: Oral puzzles
Could someone tell me how to do the button thing so I can hide my answers?
Thanks in advance.
e...the red-headed stepchild of math.
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#249 2008-05-22 02:40:20
- Jai Ganesh
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- Registered: 2005-06-28
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Re: Oral puzzles
Answer to #439 :
Very good, JaneFairfax!
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#250 2008-05-22 15:52:05
- JohnnyReinB
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- Registered: 2007-10-08
- Posts: 453
Re: Oral puzzles
to SvenBee, you just use hide tags
It works like this: {hide=I want to hide} this!{/hide}
Only using [ brackets. If we do the above, it would look like this:
Last edited by JohnnyReinB (2008-05-22 15:52:28)
"There is not a difference between an in-law and an outlaw, except maybe that an outlaw is wanted"
Nisi Quam Primum, Nequequam
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